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Thread: cold room

  1. #1
    Join Date
    Apr 2014
    Location
    south africa
    Age
    29
    Posts
    1
    Rep Power
    0

    cold room



    im having a challenge with an old type cold room using R22. the client was complaining that it was not cold enough so the previous technician before me tempered with the expansion valve. i ordered an expansion valve and changedthe drier as well. when i opened the valves the presure switch tube was full of oil. from then the cold room is not working well. the pressures runs low side 100psi and high side 200psi. seems as if oil migrated so i drained all the oil from the compressor and added new oil. after that now the compressor trips on internal overlod. my question. those pressures i dont think they are normal so i thought of replacing the compressor. is ther anything else that i should do here to avoid new compressor doing samethiing.



  2. #2
    Join Date
    Sep 2009
    Location
    Iran
    Age
    60
    Posts
    482
    Rep Power
    12

    Re: cold room

    Hi
    some wrong in your compressor

    might be from suction and discharge valve plate ( broken)
    check them

  3. #3
    Join Date
    Feb 2009
    Location
    telford
    Posts
    2,033
    Rep Power
    27

    Re: cold room

    is it an open compressor or hermetic

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